If you guessed...
Belle from Beauty and the Beast you are correct. If you said Alice (in Wonderland), Maria (von Trapp), or Mary Poppins please watch your films more carefully next time. Just had to get that beef off my shoulder.
Anyway, for this costume I used Simplicity 2539:
I made two slight adjustments. I made the arm facing bigger and I made a lining for the neck facing. It sat much smoother than the regular facing.
For the top I used Butterick 5711:
I made version C or the light purple one. I made it without buttons and secured the neck with a snap. I did this for two reasons. One is to hide my tattoo and the other is because no buttons are visible on Belle's shirt. Now before you get all up in my face, I know her shirt is a V neck but this is the pattern that I had, and yeah I had to hide my tattoo. Also, you can't really see the bow in the above picture but I had it.
Next year's costume is already swirling around in my head. I hope you had/have a great Halloween! Until next year...